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2400 Series SourceMeter
®
User’s Manual
SCPI Command Reference
18-67
Select auto range
AUTO <b>
[:SENSe[1]]:CURRent[:DC]:RANGe:AUTO <b>
Control auto ranging for amps
[:SENSe[1]]:VOLTage[:DC]:RANGe:AUTO <b>
Control auto ranging for volts
[:SENSe[1]]:RESistance:RANGe:AUTO <b>
Control auto ranging for ohms
Parameters
<b> =
0 or OFF
Disable auto range
1 or ON
Enable auto range
Query
:AUTO?
Query state of auto range
Description
This command is used to control auto ranging. With auto ranging
enabled, the instrument automatically goes to the most sensitive range to
perform the measurement.
When this command is used to disable auto range, the instrument
remains at the automatically selected range. When a range is manually
selected, auto range is disabled. (See previous command.)
NOTE
For the Model 2430 Pulse Mode, auto range cannot be enabled (error +831).
LLIMit <n>
[:SENSe[1]]:CURRent[:DC]:RANGe:AUTO:LLIMit <n>
Set auto ranging lower limit for amps
[:SENSe[1]]:VOLTage[:DC]:RANGe:AUTO:LLIMit <n>
Set auto ranging lower limit for volts
[:SENSe[1]]:RESistance:RANGe:AUTO:LLIMit <n>
Set auto ranging lower limit for ohms
Parameters
<n> =
-105e-6 to 105e-6
Amps lower limit
-21 to 21
Volts lower limit
-2.1e8 to 2.1e8
Ohms lower limit (2400 and 2410)
-2.1e7 to 2.1e7
Ohms lower limit (2420, 2425, 2430,
and 2440)
Query
:LLIMit?
Query auto range lower limit
Description
Auto range lower limits are intended primarily for SYST:RCM MULT
support. (See
“SYSTem subsystem,” page 18-106
.) The lower limit for
all three functions is programmable and must be less than or equal to the
upper limit. If the lower limit is equal to the upper limit, auto ranging is
effectively disabled. (See below.) When autoranging is disabled, you can
manually program the unit for any range below the lower limit. Note
also that the maximum volts lower limit depends on the compliance set-
ting (see below).
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Summary of Contents for SourceMeter 2400
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